89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
package api
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import (
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"errors"
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"net/http"
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"strings"
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"github.com/mediocregopher/blog.mediocregopher.com/srv/api/apiutil"
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"github.com/mediocregopher/blog.mediocregopher.com/srv/mailinglist"
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)
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func (a *api) mailingListSubscribeHandler() http.Handler {
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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email := r.PostFormValue("email")
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if parts := strings.Split(email, "@"); len(parts) != 2 ||
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parts[0] == "" ||
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parts[1] == "" ||
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len(email) >= 512 {
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apiutil.BadRequest(rw, r, errors.New("invalid email"))
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return
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}
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err := a.params.MailingList.BeginSubscription(email)
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if errors.Is(err, mailinglist.ErrAlreadyVerified) {
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// just eat the error, make it look to the user like the
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// verification email was sent.
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} else if err != nil {
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apiutil.InternalServerError(rw, r, err)
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return
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}
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apiutil.JSONResult(rw, r, struct{}{})
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})
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}
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func (a *api) mailingListFinalizeHandler() http.Handler {
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var errInvalidSubToken = errors.New("invalid subToken")
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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subToken := r.PostFormValue("subToken")
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if l := len(subToken); l == 0 || l > 128 {
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apiutil.BadRequest(rw, r, errInvalidSubToken)
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return
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}
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err := a.params.MailingList.FinalizeSubscription(subToken)
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if errors.Is(err, mailinglist.ErrNotFound) {
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apiutil.BadRequest(rw, r, errInvalidSubToken)
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return
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} else if errors.Is(err, mailinglist.ErrAlreadyVerified) {
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// no problem
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} else if err != nil {
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apiutil.InternalServerError(rw, r, err)
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return
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}
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apiutil.JSONResult(rw, r, struct{}{})
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})
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}
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func (a *api) mailingListUnsubscribeHandler() http.Handler {
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var errInvalidUnsubToken = errors.New("invalid unsubToken")
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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unsubToken := r.PostFormValue("unsubToken")
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if l := len(unsubToken); l == 0 || l > 128 {
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apiutil.BadRequest(rw, r, errInvalidUnsubToken)
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return
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}
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err := a.params.MailingList.Unsubscribe(unsubToken)
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if errors.Is(err, mailinglist.ErrNotFound) {
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apiutil.BadRequest(rw, r, errInvalidUnsubToken)
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return
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} else if err != nil {
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apiutil.InternalServerError(rw, r, err)
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return
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}
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apiutil.JSONResult(rw, r, struct{}{})
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})
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}
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